Share a few maintenance time especially good use of stupid way.
1. The first thing is to see when the alarm is out.
This is particularly important. If the alarm as soon as the power on, then the priority suspect encoder disconnection, plug off, encoder power supply is not. Spindle a turn before the alarm, prioritize the signal instability, bad encoder, interference problems. Direction of the time alarm, focus on checking the encoder angle feedback, directional signals. Alarm when tapping, first to high-speed synchronization feedback abnormality on the pondering.
2. Then check the wire.
This is the maintenance of intuition, because the wire problem is much more than the drive. Focus on whether there is no crushing, whether there is no serious bending, whether there is no oil soaked, whether the shielding layer is intact. If you have the conditions, directly measure the through, shielding and insulation to ground.
3. Plug and re-plug again.
Don't think it's a cheap trick. Many machines are really because of poor contact, especially in wet environments, oil workshop, long time not moving equipment, oxidation is particularly common.
4. Measure the encoder signal.
If there is an oscilloscope on the scene, you can see the name. Focus on whether the waveform is stable, the signal lost or not lost, the amplitude is enough. Often a look at the waveform to know which section of the problem.
5. There is also a situation is to change something after the alarm.
This is also a lot. For example, change the spindle drive, change the encoder, move the system parameters, and then alarm 27 popped up. At this time, we must check the parameters with the physical right or not, because different types of encoder specifications, resolution, signal type may be different, not set the system of course not recognized.
Alarm 27 with those other spindle alarm how to distinguish?
A lot of people can not distinguish a pot of porridge, simple to help you rationalize:
Alarm 02 is the speed deviation is too large;
Alarm 27 is the encoder feedback signal is not normal;
Alarm 29 is the spindle overload.
Alarm 27 key word is "feedback signal”, not overload, not the motor is not strong, is the system can not read the correct feedback.
How to make alarm 27 less come out to annoy you?
In fact, many alarms are "dragged” out. If you pay a little attention to it, you will have less trouble. For example, regularly look at the feedback line has not broken skin, the cabinet to keep clean, do not let the oil and water into the plug, the signal line and power line do not tie together to go, grounding is good. These things usually no one takes seriously, when the problem is the cost of downtime.
